In Epigenetics, we learn about methylation and acetylation.
acetylation may not really be considered epigenetic marking since it is not heritable by mitosis. Also, acetylation is marking on histone N-term tails which do not affect DNA directly but can be considered as chromatin remodellers by eating into histone's positive charge.
Histones methylation does not alter the charge of the histone. H3K4me means methylation of the 4th Lysine (K) residue on histone 3.
DNA Methylation, on the other hand, can occur on CpG islands in the DNA and can modify transcription.
acetylation may not really be considered epigenetic marking since it is not heritable by mitosis. Also, acetylation is marking on histone N-term tails which do not affect DNA directly but can be considered as chromatin remodellers by eating into histone's positive charge.
Histones methylation does not alter the charge of the histone. H3K4me means methylation of the 4th Lysine (K) residue on histone 3.
DNA Methylation, on the other hand, can occur on CpG islands in the DNA and can modify transcription.
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